Tungsten heavy alloys which can also be called high gravity alloys
are refractory metals, it is a kind of alloy using tungsten as
matrix and components nickel, iron, copper and other alloying
elements. Basically there are two series, W-Ni-Fe and W-Ni-Cu,
sometimes even W-Ni-Cu-Fe.

Our tungsten alloy cube are produced by powder metal and sintering
processes.Tungsten is the world's 4th heaviest metal.Tungsten heavy
alloy contains mainly tungsten ranging from 80wt% to 98wt%, and its
density can reach 15.8~18.5g/cm3. Nickel, iron, copper serve as
binder between tungsten grains and make the material ductile and
more machinable. Compared to W-Ni-Cu, W-Ni-Fe possesses a better
mechanical property, being widely used in national defense
industry.

Tungsten heavy alloys have many special properties such as high
density (15.8-18.5g/cm3), high melting point, wear resistance, high
tensile strength, good elongation capacity, low vapor pressure,
excellent thermal stability and high radiation absorption capacity,
etc., so due to these advantages they are widely used in various
fields including the military, sports, aerospace, aviation, oil
drilling, electrical instrumentation and medical industries.

Our processing route for tungsten heavy alloys is show in Figure 1.
Firstly, mix the calculated amount of elemental powders according
to certain ratio, ball milling to even all powders and refine
powder grains. Then, employ cold pressing and liquid phase
sintering to almost full density. The matrix alloy melts and some
tungsten dissolves into solution during liquid phase processing,
resulting in a microstructure through which large tungsten grains
(20–60µm) are dispersed in the matrix alloy. The as-sintered
material often is subjected to certain aging treatments, finally
leading to improved strength and hardness in the heavy alloys.

Specifications:

1. AMS Specifications

AMS-T-21014

Class 1

Class 1

Class 2

Class 2

Class 3

Class 3

Class 4

Composition

90W7Ni3Fe

91W6Ni3Fe

92W5Ni3Fe

93W4Ni3Fe

95W3Ni2Fe

96W3Ni1Fe

97W2Ni1Fe

Density (g/cm3)

17.1±0.15

17.25±0.15

17.50±0.15

17.60±0.15

18.10±0.15

18.30±0.15

18.50±0.15

Heat Treatment

Sintering

Sintering

Sintering

Sintering

Sintering

Sintering

Sintering

Tensile Strength (MPa)

900-1000

900-1000

900-1100

900-1100

920-1100

920-1100

920-1100

Elongation (%)

18-29

17-27

16-26

16-24

10-22

8-20

6-13

Hardness (HRC)

24-28

25-29

25-29

26-30

27-32

28-34

28-36

2. Our General Sizes (Customization accepted)

Dimensions

2.8 x 2.8 x 2.8 mm

3.2 x 3.2x 3.2 mm

Tolerance

± 0.12mm

± 0.12mm

Content

W: 94% min , Ni:4% , Fe:2%

W: 94% min , Ni:4% , Fe:2%

Weight

0.40g (± 0.02g)

0.60g(± 0.02g)

Density

≥ 17.8g/cm3

≥ 17.95 g/cm3

Hardness

25-36HRA

25-36HRA

Elongation

≥ 10%

10%

Applications:

Tungsten heavy alloy has a series of excellent physical, chemical
and mechanical properties, so it is widely used for the balance
weight and military industry.

Advantages of tungsten heavy alloy:

The most outstanding property of heavy metal alloys is the high
density, which is far higher than nickel, titanium and lead alloys.
It is employed to be a substitute for those alloys, not only
because of its superior physical properties mentioned above, but a
low expansion coefficient and high modulus of elasticity. Its ray
absorption capability is 30~40% higher than lead, the thermal
conductivity is five times than die steel.

Jiangsu Hetian Technological Materials Co., Ltd. is founded in 2003 and located in southeast of China, Yixing City,
near Shanghai. We are the professional manufacturer of tungsten powder, tungsten carbide powder, and its related products, including tungsten carbide rods, balls, anvils, plates and high gravity alloy
tungsten cube. Among those value added products, what we mainly focus on is
tungsten carbide rods, anvils and cubes.

To assist with productions above, we built up our own hydrogen fabrication base for reduction reaction during the process of making tungsten
powder and graphite container manufacturing center for all containers we need to use during powder or carbide rods
sintering.

Our company has more than 100 employees, with 5 senior engineers
and 30 junior engineers. Co-operating with Central South
University and Chinese Academy of Sciences, to a great extent,
supports and promotes our developing & research ability. More
profound understanding and techniques about cemented carbide are
promoted all the time. To facilitate our customer, Hetian Tech
HQ also set two sales points separately in Shenzhen, Guangdong
Province and Weihai, Shangdong Province. More customers’ need or
feedback can be solved in time.

Hetian Tech Material Company pays high attention to technology
innovation. It is the National High-Tech Enterprise and has 6 utility model patents, with one accepted inventive patent. It has also passed GLB 9001B-2009 standard, ISO 9001:2000, and ISO 9001:2008 quality management system certifications. We are a council member of Cemented Carbide Branch, China Tungsten
Association. Besides, our brand "Jinlei" is listed in "Famous Brand Products
of Wuxi City".

Our company believes and insists in "People Oriented, Technology
Innovated, Quality First and Honesty Foremost". Welcome to visit
Jiangsu Hetian and we hope to cooperate with you.